Balancing means for centrifugal pumps.



F. W. KROG H. BALANCING MEANS FOR CENTBIFUGAL PUMPS. APPLICATION FILED JAN-6, 1913.

1,146,078; r 4- Patented July13, 1915.

2 shins-4min 2.

FERDINAND W. KEG-SH. OF SAN FRANCISCO, CALIFORNIA.

BALANCING lrIEA'NS 1 01 CLZIT'TRIFUGAL EUMPS.

Specification of Letters Batons.

lni eiileii J 11337 13, 1915;

Application filed January 8, 1913. Serial No. (410,299.

To (HZ 11-]: mm 2' 3 may, (ronr 'em Be it known that 1, lunursiit'o Kuwiu', of Sun Francisco :lulii'ornia, have invented certain new and useful Improve Centrifu gel is a merits in Balancing Means for Pumps, whereof the following lication.

My invention relates to the art of pumping from deep or shallow WQllS mil es; chilly to centrifugal pumps adapted for such ,101 'tion lhe Weight of thevlonfz s ft :UlLl be large impeller used in such tions, hears with injurious force on the s te hunting or supporting shoulder located a.- ihe bottom of the well and various device for munternrting the downward thrust the moving parts so as to give them 3 liqui 1 hearing insi'eml of u solicl one, have hee (lerisv l. T

M invention has. for its objecfi to m or U p o- YlC i in centrifxilgul pumping rleviees if hiruil referred to new and improvecl nezms for providing :1 liquid hearing for the hot loin of the moving parts in which said 550*," lug part-s shall float.

Vr'ith this object riew my i consi in new and improved 3 converting the energy of ilie churgei'l from the impeller into an thrust counteracting the downward of the moving parts zuul in ii i proved means for adjusting the two o; inn thrusts so that the moving or apparatus will flout in :1 liquid he I accomplish my object by insu ers set forth in the following specificaiion, particularly pointed out in the claims eml hereof, and illustrated in the punyin l the sheet; of drawing. in

Figure 1 2-. Vkflwfiill session of :1 e ugzil pump showing: my invention ii tion thereon, Fig. 2 is :r top plan the impeller; and hip. 3 is an inveri cl View of the upper part of the casing of the pr The same symbol of reference marks some part in Whichever said part may appear.

Describing now my invent-ion in lein,

1 is :1 pump casing of no (10 Well pm installation A of which l5 pipe, (7 the rotary sl it, and peller. he casino, with rej'kren-e construction and operation or i i may he conceived to he diiii'leil inio ml per ehuiuher 2, and :1 lower chamber 3, r' the impeller E Which olrnws Waiter fr,

' discharges it to the suriirge pipe E from the mparted to the (lis- "ler us it leaves ,QLS, so rat "the Water in the a pressure proportional to pump. communicates with the lower clunnher of the casing: l, and the energy oi the -larger! Water is therefore distril'iuterl ,"'-ne:1'[h the impeller as the Tillie! from An upward iinpellei; it may he :1? which is thereby given to the huft nncl. whatever other parts il to shill impeller and shaft, erl U the urea of the under ieller and the energy of 1. Hence results a liftuioi'ing parts which takes article on them oh their solid. slepbearing or supportthe sni-tl lifting action is A and by the flangecl m er and by ,conformme;

- to correspond with the V the upper chamber space 4-, and thereof the discharged against the im= l to the energy from on the host-om of he l energy so impart-Eu 'riil' energy, because the is clistrihuse is less. are of the bottom 9+3 chamber 2 a relief are provierl, which commue rlisehurge relief pipes ,8 he air or in'to the suction pipe i are proviclerl inside the :u-oruul encls of pipes 8, so that hnpeller is in lLS topmost posit-ion ii, shown in Fig. 1 it will not interP-e 1! with ihe lea-rage from part 5 into er 2, which leakage i i "mserl ,i the Writer disclmrgetl from ml *0 continue, until the 2 is sufiieient to 1 flows into chamber -3.

isi the rom'ing' parts into enleakage pas downwardly again, are opened. Enough water escapes from the part'a of chamber 2 to reduce the pressure m that part to a point where the upward-- thrust is greater than the downward thrust;

, whereupon the moving parts'are lifted again i ofi shoulder ,10. v

continue until the impeller occupies a positipn wherein the escape from .the relief The described react-ions pipes just equals the leakage throughpassage 6. In that position the impeller is floating'in thewater, been formed, and contact with solid bearthe liquid stepbearing has in has been eliminated. d

do not depend on vacua above my impeller-to produce the results aimed at, because sometimes the water in the Wells lies wholly below the prunp and sometimes covers the pump completely; But as will be seen, by the above description I. rely wholly on the positive upward action of the energy of the water discharged from the impeller to lift and its positive action upward and downward to balancethe moving parts of my e Having thus described my invention and believing I have produced useful and. novel improvements in the art to which it appertains let it be understood that I do not wish to be limited to the exact construction and arrangement of the several parts composing the same as many changes can be made with out departing from the spirit thereof but What I claim and desire to secure by United States Letters Patent is:

. with said port.

1. In a centrifugal pumping device, the

combination with a casing provided with a' relief port opposite the intake, an impeller provided with a chamber communicating and an annular flange projecting inwardly from the outer edge of said chamber adapted to close or open said port.

2. In a centrifugal pump, a casing provided with a. chamber opposite the intake; having a relief port, an impeller provided with a chamber operating in the casing chamber and provided with an upper inncr projecting flange adapted to close or open said relief port.

3. In a centrifugal pump, a casing provided with a chamber and a relief port an impeller provided with a chamber having an inner projecting flange adapted to, close said relief port, aboss between said relief port and said projecting flange for allowing the water passing between the stationary and running parts to freely circulate within the inner chamber.

4. In a centrifugal pumping device, the combination with an impeller, of a casing having a space into which the water from the impeller isdischarged, a lower chamber 5. A centrifugal pump comprising. an impeller and a casing having a space for water disfharging from said pump and an upper an space, a flanged ring having a rectangular inner projecting edge constructed on said impeller and co-acting with :the casing topartially shut off part of the upper surface of said impeller from'said space and a relief port in the region inclosed by said ring controlled by said inner projecting edge,

6. A centrifugal pump comprising acasing having a discharge outlet and a suction inlet, said casing having a relief passage one end of which is in communication with the suction inlet side of the'casing and the other end is in communication with the sidciof the casing opposite its suction inlet side, a runnerewithin the casing having on its suction inlet side a running slip joint with the "suctioif'inlet of the casing, and having on its lower chamber communicating with said opposite side an annular angled flange, one

casing, to throttle and open said communication; and a longitudinal slidable driving shaft carrying said runner.

In testimony that I claim the foregoing I have hereto set my hand this 9th day of December, 1912, in the presence of witnesses.

FERDINAND W. KROGH.

Witnesses:

BLANCHE C. Crmsrnn, GRACE PARE. 

